Ore-concentrator.



Patented Oct. 25; 1910.

W. 0. KING.

ORE GONGENTRATOB.

APPLICATION FILED MAR. 7, I910.

WWW!!! Witmeoca machines of this class.

N TE sTA'rEs n rENT OFFICE.

WILLIAM o xme, or "MORNTAIN HOMEQIIDAHO.

onn-coivcnn'rnn'ron.

. Application a ma 1. 1910, Serial no. 541cm.

To all whom it'moy concern;

lle it known that 'l, '\Vul|.i.\n. IQNG, a citizen otthe United States, resid ng at Mountain llomc. in the county of lllmore' and State of -Idaho. have invented ne and useful Improvements in Ore-Concentrators, of which the following is a specification.

.\l v invention relates to centrifugal ore eoncentraters. by means of which the heavier and more valuable portions are separated from the lighter and less 'aluable portions Specification of Letters Patent.

ot orc-bearing sands. crushed quartz, or the like.

More particularly stated, my invention resides in certain improvements which I. have made. in the construction of the bowl, whereby the separation of the-heavier concel'it'rates from the lighter tailingsan'd rote use lfs'dtlNlPlOd more complete and etticient than has heretofore been possible with exist ing machines, as far as I am aware, espe-' cially the chncen'tration of certain ore-bear iug sands, such as are found for example, in the Snake River.

1' will now describe. the improvements which have made to the construction of the bowl in detail, reference being made: to the accompanying drawing, in which,

Figure l is a scctional side elevation of my improved concentrator, and Fig. 2 is a halt plan sectional view of the bowl taken on the line 2-2 of Fig. 1', looking upward.

1 represents the frame of the concentrator, on which the bowl 2 and its actuating mech anism are supported. The bowl 2 is sc cured to and carried by a hollow shaft 3, the top of which maybe funnel-shaped,as shown at 4, and the lower end of which is journaled in a step-bearing 5, in which it rests on a spring 6. The shaft 3 and bowl .3 are rotated from a driving shaft 7, connected by bevelgears 8 with a vertical shaft 9, on which is carried a sprocket-wheel 10, driving, by means ofthe chain 11, the sprocketwheel 12, secured to the shaft 3. On' the shaft 9 is also mounted a double face-cam 13, with the opposite faces of which contact rollers 14 carried by the forked end of a lever 15, pivoted on the frame and engaging with its slotted other end pins 16, secured to the shaft 3. Thus the bowl is not only rotated from the driving shaft 7 but is also vertically reeiprocatcd, as is common in The bowl itself is parabolic in section, and the ores to be concentrated or the sands to be separated are some convenient point.

r n-area on. 25, 1am.

fed with:wat e.r. into the bowl through the --hollo.w shaft 3. which is provided with lateral openings 18. conmnmicating 'with the bowl near the bottom thereof.

The wall of the bowl is provided with a series of substantially.vertical grooves Qt), starting near the bottom of the bowl and increasing in depth toward the top, where they communicate with discharge openings 21 provided with short spouts 2i. 'lhese grooves are not absolutely straight in the vertical.direction but are curved slightly in the opposite direction to that in which the bowl is rotated. being equally spaced from each other, and. in the example shown, being in number. The purpose of these grooves is to lead the com'entrates upwardly tosaid, discharge openings. The concentrates being the heaviest part oi" the material being treated will naturally be thrown against the sides of the bowl and, by reason of its speed of rotation and agitation, will be forced upward ',along said grooves and through the lischarge pipes 22, from which they fall into an annular trough 23, from which a spoutxQlleads at The tailings or lighter portions of the material will also be forced upwardly by t'hecentrifngal action and for their reception 1 have provided sub stantially horizontal means located intermediate of saidgroovcs at a short distance below the tops thereof. said means consisting of a series of tubes 25, equal in number to the said grooves and having their lower halves cut away in that portion ol. them lying between one groove and the next, while for the remaining length of said tubes, which amounts to one-half the distance be.- tween twoadjacent grooves, the tubes are left full, and said full or uncut-away parts of the tubes connnn'nicate with discharge openings 26, in the wall of the bowl, the plane of said o 'ienings being below that of the dischargc'openings 21 of the grooves 20, and each discharge opening 26, being located half-way between each pair of adjacent grooves 20. ']hese tubes are arranged," as stated, substantially horizontally but are slightly inclined upwardly toward their discharge ends and overlap each other as shown in the drawing. The cut away portions of the tubes form barriers or stops for the lighter material between the grooves 20 and owing to their slight upward inclination conduct said material into the uncutaway portions of the tubes and thence to the .lischarge openings 26, from which the tailings OI'ICfllSG material is collected in an annular trough 30, from which a spout 31 leads off at some'convenient point.

The operation of my improved concentrator will be readily understood from the above description. It will be seen that it provides for a continuous separation of orebearing sands or the like, the concentrates being continuously delivered froin the bowl and collected at one point, while the tailiugs or refuse are delivered and eollecttul at another..'

Having thus described my invention what I claim is 1. in an ore "om'zentrator of the type described, a separating bowl parabolic in section and provided near its top with discharge openings for the concentrates and means to conduct the same thereto, and also provided withdischarge openings for the tailings, located in a plane below that of the discharge openings for the concentrates, and independent transverse obstructing means located between each pair of discharge openings for the concentrates to conduct the tailings to their discharge openings.

.2. In an ore concentrator of the type described, a separating bowl in the wall of which are provided a series of equidistant substantially vertical grooves, increasing in depth from near the bottom of the bowl to near its top and communicating there with discharge openings, and an equal numbcuof substantially horizontal tubes, ,located near the top of the bowl below the level of said discharge openings, each tube extending througl'iout substantially one-and-one-half times the'space between adjacent grooves and the lower half of each tube being cut away in that portion of it which extends from one groove to the next, the other ends of said tubes communicating with discharge openings located midway between but slightly below the discharge openings of said grooves.

3. In an orc concentrator of the type described the eombination of a hollow'vertical shaft, a parabolic bowl secured thereto, said shaft having openings in its wall communicating with said bowl near its bottom, and means to rotate and reciprocate said shaft, said bowl having a series of substantially vertical grom'es communicating with discharge openings for the concentrates nea'r the top of the bowl, and with substantially horizontal means located between each pair of said grooves near the top thereof to arrest and catch the tailings, substantially horizontal tubes con'mulnicating with said means and with a second series of discharge openings located intermediate of said first mentioned openings, and stationary means surrounding said bowl to receive the concentrates and tailings respectively.

4:. In an ore concentrator of the type described, a centrifugal bowl, the wall of which is provided. internally with a series of equidistant longitudinal grooves communicating near their tops with discharge openings in said wall, an equal number (if-independent transverse obstructing means located be tween said grooves near their tops, an equal number of independent tubes communicating with said obstructing means and with another .series of discharge openings intermediate of said first mentioned openings, and n'ieans to rotate and reciprocate said bowl. F I 1 In testimony whereof I have hereunto set my hand in presence oftwo subscribiir witnesses.

WVI. Llil AM 0. KING.

lVitnesscs -Tnoaras TnAsnsN,

Roy A. Grumman. 

